Ptychographic characterisation of polymer compound refractive lenses manufactured by additive technology

Lyubomirskiy, Mikhail; Koch, Frieder; Abrashitova, Ksenia; Bessonov, Vladimir O.; Kokareva, Natalia G.; Petrov, A. K.; Seiboth, Frank; Wittwer, Felix; Kahnt, Maik; Seyrich, Martin; Fedyanin, Andrey A.; Dávid, Christian; Schroer, Christian G.

doi:10.1364/oe.27.008639

Cited by 26 publications

(11 citation statements)

References 31 publications

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“…A polymer-based corrector plate is used in the present study and its thickness required for compensation wavefront error is calculated using equation (7). A typical 3D printable polymer IP-S of thickness difference Át = 10 mm will produce a phase advance 2Át/ and will introduce an optical path difference of 11.74 pm [molecular formula C 14 H 18 O 7 , density = 1.2 g cm À3 (Lyubomirskiy, Koch et al, 2019)]. An estimated thickness profile of the IP-S corrector in a 3D symmetry is shown in Fig.…”

Section: Corrector Plate Designmentioning

confidence: 99%

Correction of the X-ray wavefront from compound refractive lenses using 3D printed refractive structures

Dhamgaye

Laundy

Baldock

et al. 2020

J Synchrotron Radiat

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A refractive phase corrector optics is proposed for the compensation of fabrication error of X-ray optical elements. Here, at-wavelength wavefront measurements of the focused X-ray beam by knife-edge imaging technique, the design of a three-dimensional corrector plate, its fabrication by 3D printing, and use of a corrector to compensate for X-ray lens figure errors are presented. A rotationally invariant corrector was manufactured in the polymer IP-STM using additive manufacturing based on the two-photon polymerization technique. The fabricated corrector was characterized at the B16 Test beamline, Diamond Light Source, UK, showing a reduction in r.m.s. wavefront error of a Be compound refractive Lens (CRL) by a factor of six. The r.m.s. wavefront error is a figure of merit for the wavefront quality but, for X-ray lenses, with significant X-ray absorption, a form of the r.m.s. error with weighting proportional to the transmitted X-ray intensity has been proposed. The knife-edge imaging wavefront-sensing technique was adapted to measure rotationally variant wavefront errors from two different sets of Be CRL consisting of 98 and 24 lenses. The optical aberrations were then quantified using a Zernike polynomial expansion of the 2D wavefront error. The compensation by a rotationally invariant corrector plate was partial as the Be CRL wavefront error distribution was found to vary with polar angle indicating the presence of non-spherical aberration terms. A wavefront correction plate with rotationally anisotropic thickness is proposed to compensate for anisotropy in order to achieve good focusing by CRLs at beamlines operating at diffraction-limited storage rings.

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Section: Corrector Plate Designmentioning

confidence: 99%

Correction of the X-ray wavefront from compound refractive lenses using 3D printed refractive structures

Dhamgaye

Laundy

Baldock

et al. 2020

J Synchrotron Radiat

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“…The core part of PtyNAMi is designed to accommodate different nanofocusing X-ray optics, such as NFLs (Schroer et al, 2003(Schroer et al, , 2004 for the harder X-ray regime above E = 10 keV and FZPs (Vila-Comamala et al, 2011;Gorelick et al, 2011;Parfeniukas et al, 2016;Mohacsi et al, 2016) for the lower X-ray spectrum below E = 10 keV. The setup is quite flexible, providing a general platform for the characterization of new X-ray optics (Seiboth et al, 2014;Lyubomirskiy et al, 2019). In particular, adiabatically focusing lenses (AFLs) Patommel et al, 2017) or multilayer Laue lenses (Kang et al, 2008;Bajt et al, 2018) can reach the sub-20 nm resolution regime on a routine basis.…”

Section: X-ray Optics and Nanobeam Characterizationmentioning

confidence: 99%

PtyNAMi: ptychographic nano-analytical microscope

et al. 2020

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Ptychographic X-ray imaging at the highest spatial resolution requires an optimal experimental environment, providing a high coherent flux, excellent mechanical stability and a low background in the measured data. This requires, for example, a stable performance of all optical components along the entire beam path, high temperature stability, a robust sample and optics tracking system, and a scatter-free environment. This contribution summarizes the efforts along these lines to transform the nanoprobe station on beamline P06 (PETRA III) into the ptychographic nano-analytical microscope (PtyNAMi).

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“…Technical advances have enabled the microfabrication of diamond lenses by ion/plasma etching (Alianelli et al, 2010;Lyubomirskiy et al, 2019a), laser ablation (Terentyev et al, 2017;Antipov et al, 2018), or focused ion beam milling (Medvedskaya et al, 2020). Another new approach is the additive manufacturing of lenses by two-photon polymerization (Petrov et al, 2017;Lyubomirskiy et al, 2019b). So far, all techniques struggle with inherent limitations of the fabrication process and the production of X-ray optics with diffractionlimited performance, high numerical aperture (NA), large geometrical aperture, and sufficient radiation resistance is non-trivial.…”

Section: Introductionmentioning

confidence: 99%

Hard X-ray wavefront correction via refractive phase plates made by additive and subtractive fabrication techniques

Seiboth

Brückner

Kahnt

et al. 2020

J Synchrotron Radiat

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Modern subtractive and additive manufacturing techniques present new avenues for X-ray optics with complex shapes and patterns. Refractive phase plates acting as glasses for X-ray optics have been fabricated, and spherical aberration in refractive X-ray lenses made from beryllium has been successfully corrected. A diamond phase plate made by femtosecond laser ablation was found to improve the Strehl ratio of a lens stack with a numerical aperture (NA) of 0.88 × 10−3 at 8.2 keV from 0.1 to 0.7. A polymer phase plate made by additive printing achieved an increase in the Strehl ratio of a lens stack at 35 keV with NA of 0.18 × 10−3 from 0.15 to 0.89, demonstrating diffraction-limited nanofocusing at high X-ray energies.

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Ptychographic characterisation of polymer compound refractive lenses manufactured by additive technology

Cited by 26 publications

References 31 publications

Correction of the X-ray wavefront from compound refractive lenses using 3D printed refractive structures

Correction of the X-ray wavefront from compound refractive lenses using 3D printed refractive structures

PtyNAMi: ptychographic nano-analytical microscope

Hard X-ray wavefront correction via refractive phase plates made by additive and subtractive fabrication techniques

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